The Unidirectional Hazard Marker Signs are used at road hazards where It is necessary to emphasise to approaching traffic the direction to be taken if the marker appears in the driver's line of approach. The direction is indicated by chevrons, which may point to the left or right as required.
D4-1-2A = 450x450mm Class 1 Reflective Aluminium
D4-1-2B = 600x600mm Class 1 Reflective Aluminium
Hazard signs inform road users of severe changes in road direction, road closures, bi-directional instructions and width restrictions
Typical uses of this marker are - (i) to indicate en abrupt narrowing of the pavement; (ii) to delineate an exposed median end or other carriageway obstruction where all traffic must pass to one side; or (iii) to indicate vehicle paths at intersections